Bolt turning attachment for rifle



A ril 29, 1958 J; T. m ,83 6

BOLT TURNING ATTACHMENT FOR RIFLE 2 Sheets-Sheet 1 IN V EN TOR.

T155515 T. Ivy

April 29, 1958 J. T. NY 2,832,165

BOLT TURNING ATTACHMENT FOR RIFLE I Filed Aug. 25, 1955 2 Sheets-Sheet 2I I 1/? 11/7/771 /Zf INVENTOR. JESS/f T. /VY

ZZTQW l9 TT BHE Y6 BOLT TURNING ATTAQNT FOR RIFLE Jessie T. Ivy,Seattle, Wash. Application August 25, 1955, Serial No. 530,449 Claims.(Cl. 42-16) This invention relates to firearms of the small arms orrifle types and to more particularly attachments for magazine rifles ofthose types wherein the loading of cartridges into, and the ejection ofshells from the barrel is effected by sliding bolt action; and whereinthe necessary movements of the bolt are eifected manually by means of ahandle or hand lever that exetnds outwardly from one end of the bolt.

It is the primary object of the present invention to provide anattachment device for a rifle of the above kind, or

. type, whereby the necessary action of the bolt for loading,

and also for ejection of shells, is accomplished by the reciprocalaction of a charging slide which comprises a part of the attachmentdevice and which, both in its location on the gun and its mode ofoperation, simulates the charging handle of a pump gun.

More specifically stated, it is the object of the present invention toprovide, as an attachment for a bolt action magazine rifle, a mechanismcomprising a reciprocal charging slide and guiding means whereby it isoperatively mounted for movementalong the barrel, and means foroperatively connecting it with the bolt handle for eflecting thenecessary reciprocal action of the bolt for loading and unloading, andalso for effecting those limited rotary movements in opposite directionsrequired for locking the bolt after loading and unlocking it forejection of a cartridge.

It is also an object of the present invention to provide a relativelyinexpensive attachment mechanism, that can be applied to existing rifleswithout requiring any material alteration or change in their parts asthey already exist, and whereby the bolt action, which is normallycontrolled by the trigger hand of the gun user, is put under control ofthe other hand which normall grips the outer part of the gun stock forsupport of the gun in use.

It is also an object of my invention to provide, in connection with thepresent attachment or conversion mechanism, certain gripping and handand face protecting parts that provide for a more satisfactory and saferholding of the rifle when equipped with the bolt operating devices ofthe present invention.

Still further objects and advantages of the invention reside in thedetails of construction and combination of parts and in theirapplication to the rifle and mode of use as will hereinafter be fullydescribed.

In accomplishing the above mentioned and other objects of the invention,I have provided the improved details of construction, the preferredforms of which are illustrated in the accompanying drawings, wherein:

Fig. l is a perspective view of a portion of an ordinary type of boltaction rifle equipped with an attachment means embodied by the presentinvention and showing it as seen from the right hand side of the rifle.

Fig. 2 is a similar perspective view of the rifle and showing thepresent attachment means as seen from the left hand side of the rifle.

Fig. 3 is a cross-section taken through the breech end Patented Apr. 29,1&58

portion of the barrel, the frame and charging slide of the attachmentmechanism.

Fig. 4 is a vertical cross-sectional detail, taken substantially on line4-4 in Fig. 2, showing the rear supporting bearing for the boltactuating rod.

Fig. 5 is a similar vertical section taken on line 55 in Fig. 2.

Fig. 6 is a perspective view of a modified form of attachment means asapplied to a rifle having a non-rotating bolt.

Fig. 7 is a sectional detail taken lengthwise of the charging slide ofthe device of Fig. 6.

Fig. 8 is a cross-section on line 33 in Fig. 6.

Referring more in detail to the drawings:

First, giving consideration to the attachment means of Figs. 1 and 2;this being of a rifle having a sliding bolt that is locked by a slightrotary action. In these views, each of which shows a part of a rifle andan attachment means embodied by this invention as applied thereto, itdesignates the usual metal frame member of the rifle in which the breechend portion of a barrel lll is secured in the usual way; the frame itbeing secured to the usual gun stock which is designated generally bynumeral 12. The bolt, whereby cartridges are loaded into the breech endof the barrel, is designated in its entirely by numeral 14, and it isshown to be equipped at its rear end with a handle, or hand lever 15 asthe means for manually effecting its reciprocatory and rotary movements.The handle 15, as here shown, extends to the right hand side of theframe It and at its outer end terminates in a knob or ball 16 tofacilitate holding onto it.

In the operation of the gun, the bolt is shifted forwardly from itsretracted position for the loading of cartridges from the gun magazineinto the breech end of the barrel, which can be manually effected by useof the handle. Likewise, it has a rearward reciprocal action forejection of shells from the barrel. Furthermore, the bolt 14- haslimited rotary movement in one direction for looking it in its forwardposition to close the breech after a cartridge has been loaded into thebarrel, and it has an opposite rotative movement to unlock the bolt forshell ejection. Both the reciprocal movements and the rotary movementsof the bolt are effected by means of the bolt actuating handle 15 asheld by the right hand of the user when the gun is held as indicated bythe dotted line showing of hands in Fig. 1.

It will be understood that, ordinarily, the rifle used as a bolt actionrifle, is supported by the left hand grasping the forward end portion12) of the gun stock and the trigger is pulled by the forefinger of theright hand while that hand grasps the stock back of the trigger guard,and holds the butt end of the stock against the shoulder. After a shothas been fired, the hand lever is grasped by the right hand, pushedupwardly to rotate the bolt and thus to unlock it. Then, the bolt ispulled rearwardly by the lever to effect shell ejection after which itcan be shoved forwardly to reload the gun with a cartridge from a clipor magazine, not herein shown. The handle is then pulled downwardly,thus to rotate and lock the bolt in breech closing position. The loadingand unloading operation, as well as the mode of operation of the boltmechanism, is well. known in the art and will not be further described.

The present attachment mechanism converts the usual bolt action to apump gun action. It includes a charging slide and means whereby it ismounted for reciprocal movement along the forward end portion of the gunstock and means operatively connecting the charging slide with the leverarm 15 of the bolt to effect both the reciprocal and rotary actions ofthe bolt that are necessary for loading, locking, unlocking andejecting. Furthermore, the attachment mechanism provides for action ofthe charg ing slide by the left hand, that is, by the hand whichsupports the outer end portion of the gun when in use.

The charging slide of the present attachment mechanism is designated bynumeral and as best shown in Fig. 3, it is of U-form in cross-section,and it extends along and about the underside of the forward end portion12x of the gun stock 12. This handle member is equipped along the topedges of its opposite side portions with metal plates 2626, and thesehave inwardly facing channels 26x formed to their full lengths, alongtheir top edges, which channels are fitted to the longitudinal outeredge portions of a pair of guide plates 2727 that are fixed to thestock, in the same plane along opposite sides of the gun barrel.Attachment preferably being made by screws 28 as best shown in Fig. 2.

Extended along the gun frame It}, at the right hand side thereof, is thebolt actuating rod 30. Along its forward end portion, this rod is formedwith a pair of coextensive longitudinally and spirally directed channelsSit-31 of a predetermined length; this end portion of the rod being bothrotatably and slidably contained in a tubular bearing 35 that is fixedto a sidewall plate of the charging handle, as seen in Fig. 1. Fixed inthis bearing, radial thereof, are studs 36-36, the inner end portions ofwhich are slidably contained, respectively, in the spiral channels ofthe rod 30 to serve as the rod rotating means.

Near its rearward end, the rod 30 is supported for rotation andreciprocal sliding movement in a bearing block 38 that is fixed to theside of the rear end portion of the gun frame. At is rear end, the rodhas an outwardly extending arm 39 fixed thereto. This is made up ofrelatively non-rotatable, telescopically joined parts providing forslight extension and retraction of the arm.

Also, the arm 39 has a flattened end portion fitted in a longitudinalslot in the rear end of rod 30, and is so secured therein by a pivot'39pas to permit a very slight forward and rearward movement at its outerend relative to the rod 30 but no relative rotative movement. At itsouter end the rod 30 is equipped with a socket member 40, which may bemade up of two or more parts if desired, within which the ball 16 at theend of the hand lever 39 is seated. The connection between rod 30 andbolt handle 15, as effected through arm 39, is such that through therotary and longitudinal movements of the rod 30, effected by reciprocalaction of the charging slide, the bolt 14 will be actuated accordingly.This means of connection between charging slide and rod 30 as effectedby the studs 36-36 extended into the spiral channels 3131, and theconnection between the rear end of rod 30 and the bolt handle, aseffected by arm 39, provides that, with the initial rearward action ofcharging slide 25, the rod 30 will be rotated and the bolt 14 will berotated accordingly, thus to unlock it. Then, with the engaging of thetwo studs against the rear ends of the rod channels, 31-31, the rod willbe moved rearwardly with the continued rearward movement of the slide,to cause the shell ejecting action of the bolt 14. Then, after ejectionof the shell, the forward movement of the charging slide 25 pulls thebolt 14 forwardly for a loading operation.

During the reciprocal opening and closing movements of the bolt, it isheld against rotation by reason of the locking lugs with which it isequipped at its forward end, these lugs being slidable in a guide slotin the frame, but freed from the slot when the bolt reaches its forwardposition, thus providing that when the bolt is rotated, they serve tolock it. The final forward action of the charging slide 25 then causesthe studs 1616 to move forwardly in channels 31--31 and effect thatrotation of the rod 30 that results in the bolt 14 beingrotated andlocked in place. Thus, through the reciprocal movements of the charginghandle, first rearwardly and then forwardly, the bolt 14 is rotated andunlocked, then moved rearwardly for shell ejection, then moved forwardlyfora loading operation, and finally rotated to locked position.

The modified form ofmechanism showninFigs. 6, 7 and 8 is designed foruse on guns in which the bolt is reciprocally movable but has no rotaryactuator. This form of attachment device uses the same form of chargingslide, reciprocally movable along the forward part of the gun stock, andhaving a rod connection with the bolt handle which in this case requiresno swinging action in its use. in this attachment device, the bolt isdesignated by numeral 1.14, and its actuating handle, with the usualball end cut off, is designated by 115. The charging slide or hannie isdesignated by numeral 125. It is of U-form in cross-section as shownbest in-Fig. 7, and longitudinally embraces that portion of the. gunstock 12x that extends along the gun barrel forwardly of the gun frame110.

It is shown in Fig. 7 that a flat plate 50 is fixed longitudinally tothe underside of the gun stock. This plate has parallel opposite sideedges to which channeled guide blocks 52-52, fixed within the slide, arefitted forthe reciprocal support of the slide. A bolt actuating rod 130extends along the right side of the frame and stock, and is fixed at itsforward and rearward ends, respectively, to the charging slide and tothe outer end of the bolt handle 115. A bearing 60, fixed to the side ofthe stock or gun frame, supports the rear end of the rod in itsreciprocal movement.

In the application of the present attachment device to a gun or rifle,it then becomes desirable, because of the different mode of holding thegun, and different way of operating it, to apply certain hand and faceprotective means and also gripping means to the rifle. For example,since the thumb of the right hand cannot be applied across the top handgrip portion of the stock, because of the bolt action, I have provided athumb rest 62, and have fixed it in proper position to the side of thestock to receive the thumb thereagainst as shown in Fig. l. The fingersof the right hand grip the gun stock in the usual way, with theforefinger applied through the trigger guard, but the thumb is retainedseated on the rest 62 with the necessary firmness required to hold thegun in the usual manner.

It is further to be observed by reference to Figs. l and 2 that anelongated guard member 42 is fixed to and extends along the top of thestock 12 immediately-rearward of the gun frame 10 to keep the thumb andhand as well as the face of the gun user clear of'the path of travel ofthe bolt. This guard member has a metal channel 142 set therein as seenbest in Fig. .5, to receive a lug 41 that projects from the hub portion15x of the bolt hand lever 15, thus to aid in guiding and supporting therear end of the bolt in its reciprocal action.

It should further be explained that in the application of the guideplates 2727 to the stock 12 along opposite sides of the barrel, it ismost practical to first plane down the stock to provide flattenedsurfaces against which the plates can be secured. Then, the placing andsecuring of the plates, results in formation of shelves that are quiteapt to catch moisture or show if hunting in inclement weather.Therefore, to eliminate these shelves as much as possible, I haveprovided a sort of longitudinal cap 79 that is applied over and alongthe barrel to the length of the plate as shown in Fig. 1; this cap beingof such width as to substantially cover the plates and thus eliminatethem as snow or rain collecting means.

These various parts that are applied as protective means are recessednotched, or otherwise so formed as not to interfere with any of theoperating or essential parts of the rifle. They have not been shown inconnection with the rifle of Fig. 6, but would be applied in the samemanner as shown in Fig. 1.

The hand and face protective attachment as well as the grippingattachment and the cap 70 can be used on rifles and guns which are notequipped with the above described pump activating mechanism.

Having thus described my invention, what I'claim as new and desire tosecure by Letters Patent is:

1. In combination with a rifle having a sliding bolt action including ahandle extending laterally from the bolt whereby the bolt may be movedreciprocally between its closed and open positions, and can be rotatablyadjusted in opposite directions when in closed position, for unlockingit, and for looking it in closed position; an attachment devicecomprising slide guiding means fixed to and extending along the gunstock forwardly of the bolt, a charging slide reciprocally movable onsaid guiding means between definite limits, a rearward bearing fixed tothe gun rearwardly of the breech, another bearing fixed to the slide inalignment with and substantially forward of the first mentioned bearing,a bolt operating rod slidably and rotatably mounted in said bearings, alever arm extended outwardly from said rod at its rearward end and meansoperatively connecting it with the bolt handle for actuation of thebolt; said rod being formed along its forward end portion and spirallythereof with a groove that is substantially shorter than the distance ofreciprocation of the rod, and said forward bearing having a stud thereinextended into the groove whereby incident to rearward reciprocal actionof the slide, the rod will first be rotated to effect the unlocking ofthe bolt, and will then move the unlocked bolt rearwardly to openposition; and whereby on forward travel of the slide the bolt will firstbe moved forwardly to closed position and then rotated to lock it inthat position.

2. The combination recited in claim 1 wherein the said lever arm of thebolt actuating rod comprises telescopically extendable and retractableparts, and at its outer end has a ball and socket connection with theouter end of the bolt handle.

3. The combinationrecited in claim 1 wherein said slide guiding meanscomprises flanges fixed in the same plane along opposite sides of theforward portion of the gun stock, and said charging slide comprises ahand grip member of U-shape in cross section, extended along theunderside of said gun stock portion and formed along the opposite edgesof its open end with inwardly facing channels slidably containing saidflanges therein.

4. The combination recited in claim 1 including a bolt guiding memberfixed on and extended along the stock, to receive the bolt therein as itis moved to open position; said member having a longitudinal channelformed therein adapted to receive a lug on the bolt, after the bolt hasbeen rotated to its unlocked position and incident to its being movedtoward open position, thus to retain the bolt against rotation whilebeing opened and while being returned to closed position.

5. In combination with a rifle having a sliding bolt action andincluding a handle extending laterally from the bolt whereby the boltmay be moved reciprocally between ciosed and open positions, and rotatedin opposite directions for locking and for unlocking it; an attachmentdevice comprising a hand operated charging slide reciprocally mounted onthe rifle, a rear bearing fixed to the rifle, another bearing fixed tosaid slide, a bolt operating rod slidably and rotatably mounted in saidbearings, means on said rod providing an operative connection with saidhandle for the actuation of said bolt, between closed and open positionsand for locking and unlocking it, a pin and spiral slot connection oflimited extent, provided between said rod and the second mentionedbearing whereby, incident to rearward reciprocal action of said slide,the rod will first be rotated to eflect the unlocking of the bolt andwill then move the unlocked bolt rearwardly to its open position, andwhereby, on forward actuation of said slide, the rod will first be movedto return the bolt to breech closing position and then rotated to rotatethe bolt to lock it in closed position.

References Cited in the file of this patent UNITED STATES PATENTS1,103,715 Vogel July 14, 1914 1,940,362 McClarin Dec. 19, 1933 2,387,413Shafinit Oct. 23, 1945 2,499,878 Raymond Mar. 7, 1950 2,674,822 StudlerApr. 13, 1954 FOREIGN PATENTS 132,889 Great Britain Sept. 29, 1919

